<?php  
class Application_Form_Guestbook extends Zend_Form  
{  
    public function init()  
    {  
        // Set the method for the display form to POST  
        $this->setMethod('post');  
        // Add an email element  
        $this->addElement('text', 'email', array(  
            'label'      => 'Your email address:',  
            'required'   => true,  
            'filters'    => array('StringTrim'),  
            'validators' => array(  
                'EmailAddress',  
            )  
        ));  
        // Add the comment element  
        $this->addElement('textarea', 'comment', array(  
            'label'      => 'Please Comment:',  
            'required'   => true,  
            'validators' => array(  
                array('validator' => 'StringLength', 'options' => array(0, 20))  
                )  
        ));  
        // Add a captcha  
        $this->addElement('captcha', 'captcha', array(  
            'label'      => 'Please enter the 5 letters displayed below:',  
            'required'   => true,  
            'captcha'    => array(  
                'captcha' => 'Figlet',  
                'wordLen' => 5,  
                'timeout' => 300  
            )  
        ));  
        // Add the submit button  
        $this->addElement('submit', 'submit', array(  
            'ignore'   => true,  
            'label'    => 'Sign Guestbook',  
        ));  
        // And finally add some CSRF protection  
        $this->addElement('hash', 'csrf', array(  
            'ignore' => true,  
        ));  
    }  
}  